CW for MCU 10.6/10.6.4 SE (Eclipse) Licensing

I am currently working with the FRDM-KL25Z hardware and I am going to use CW for MCU 10.6 SE (Eclipse) to programming. I would like to know, Does this license perpetual or only work for 30 evaluation days? and Does it enterprise or academy license? Is it the same way for CW for MCU 10.6.4 SE (Eclipse)?

In fact, CW 10.6.4/10.6 executes special edition in default level. That’s to say, even there is no license installed under CW, it is SE is free and perpetual. But it has code size limit. If your project C code size is under this limit, you can use it for your project for free.